/Engine/Source/Runtime/Core/Public/Misc/Compression.h
static bool UncompressMemoryStream ( [FName](API\Runtime\Core\UObject\FName) FormatName, void * UncompressedBuffer, int32 UncompressedSize, [IMemoryReadStream](API\Runtime\Core\Misc\IMemoryReadStream) * Stream, int64 StreamOffset, int32 CompressedSize, ECompressionFlags Flags, int32 CompressionData )